Question

An atom has the following electron configuration. 1s^2 2s^2 2p^6 3s^2 3p^4 How any valence electrons does this atom have?

Answer 1

6.

Step-by-step explanation:

The valence electrons are those in the outer shells 3s and 3p, so it is 2 + 4 = 6.

Answer 2

6 electron valence

Step-by-step explanation:

the last shell corresponds to the valence shell. so the electrons contain in there are the electrons valence. 2 for s orbital and 4 for p orbital.